在一个典型的DEM-FDM耦合模型中,首先通过激光扫描或实验室试验实现对象的离散元建模,然后通过设定界面单元进行不同介质层间速度与力的相互传递,从而实现离散元法与有限差分法的耦合。例如,对于铁路碎石道床-土质基床的界面应力分析,可以通过建立轨枕-碎石道床-连续土体耦合模型,并计算列车通过时基床动应力分布特征,进一步...
在此基础上，采用离散元(DEM)模拟散体道床，采用有限差分法(FDM)模拟下部路基和基床，并基于接触单元在碎石道床与基床接触层进行离散元接触力与有限差分网格节点位移信息的持续相互传递，从而实现多层介质结构力学耦合。
This paper presents a numerical investigation on the load transfer mechanism of geosynthetic-encased stone column supported embankment. A coupled numerical model is developed by combining the discrete element method (DEM) with the finite difference method (FDM). A parametric study is then conducted on...
DEM-FDM coupled simulation of cone penetration tests in a virtual calibration chamber with sand[J]. Chinese Journal of Geotechnical Engineering. DOI: 10.11779/CJGE20240172 Citation: DEM-FDM coupled simulation of cone penetration tests in a virtual calibration chamber with sand[J]. Chinese Journal...
湿陷性黄土地区刚性桩复合地基中灰土褥垫层厚度、粘聚力和内摩擦角合理取值的FLAC3D数值模拟研究 热度: 刚性桩复合地基褥垫层设置问题研究 热度: 湿陷性黄土地区刚性桩复合地基中灰土褥垫层厚度、粘聚力和内摩擦角合理取值的flac3d数值模拟的研究 热度: 相关推荐 ( J . H u a z h o n g U n i v ....
基于多尺度方法的FDM-DEM耦合建模的盾构隧道建模生成软件是由深圳大学著作的软件著作,该软件著作登记号为:2024SR1168767,属于分类,想要查询更多关于基于多尺度方法的FDM-DEM耦合建模的盾构隧道建模生成软件著作的著作权信息就到天眼查官网!
This paper introduced a numerical simulation model of vehicle-track-substructure system, which combines the multi-body dynamics method (MBD), the discrete element method (DEM) and the finite difference method (FDM). In this model, rail, fastener, sleeper and ballast particles were built based on...
通过与试验结果对比发现本文提出的FDM-DEM模型能够很好模拟月壤水冰模拟物的SHPB冲击测试.获得了月壤水冰模拟物峰值强度与应变率的关系,发现月壤水冰模拟物表现出应变率增强效应,即应变率越高,峰值应力越大,这与砂土的应变率不敏感性存在明显差异.冲击过程中,试样的损伤随着冲击速度的增加而增大,但损伤持续时间变短....
led DEM–FDM method Numerical study on the CRLD cable–rock interaction under static pull-out loading using coupled DEM–FDM methodNumerical study on the CRLD cable–rock interaction under static pull-out loading using coupled DEM–FDM methodCable–rock interaction...
This study demonstrates a three-dimensional numerical simulation of earth pressure balance (EPB) shield tunnelling using a coupled discrete element method (DEM) and a finite difference method (FDM). The analysis adopted the actual size of a spoke-type EPB shield tunnel boring machine (TBM) consist...